Living donor liver transplantation for diffuse biliary papillomatosis with malignant change: A case report with 10-year follow-up

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Living donor liver transplantation for diffuse biliary papillomatosis with malignant change: A case report with 10-year follow-up

Jin Uk Choi, Shin Hwang, Dong-Hwan Jung, Gil-Chun Park, Chul-Soo Ahn, Ki-Hun Kim, Deok-Bog Moon, Tae-Yong Ha, Gi-Won Song, and Sung-Gyu Lee

Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea

Biliary papillomatosis is a rare disease of the biliary tract. In this study, we present a case of a male patient with biliary papillomatosis with malignant change who underwent living donor liver transplantation (LDLT). The 49-year-old man was admitted due to intrahepatic ductal mass, which was finally diagnosed as biliary papillomatosis. It was initially treated by photodynamic therapy, but LDLT was planned due to low efficacy of photodynamic therapy. LDLT was performed with a right liver graft from his son. The pathology report revealed intraductal papillary neoplasm with asso- ciated invasive carcinoma. He recovered uneventfully. Although the distal bile duct resection margin was free of tumor, the risk of tumor recurrence at the remnant intrahepatic bile duct still remained. Therefore, staged pylorus-preserving pancreatoduodenectomy was planned. However, after 3 months, he was readmitted due to retropancreatic abscess.

It took 6 months to control the intractable retropancreatic abscess. Due to late development of retropancreatic abscess and its slow recovery, staged pancreatoduodenectomy was no longer considered. The patient recovered complete at 1 year posttransplant without any evidence of disease recurrence. After 5 years posttransplant, lung metastasis devel- oped and pulmonary metastasectomy was performed three times. No further recurrence developed during the last 3 years to date, and the patient currently is alive, 10 years after the LDLT. Experience on our case and literature review suggest that patients with biliary papillomatosis with or without malignant transformation are selectively indicated for liver transplantation. (Ann Hepatobiliary Pancreat Surg 2020;24:209-215)

Key Words: Biliary papillomatosis; Intraductal papillary neoplasm; Living donor liver transplantation; Lung metastasis

Received: March 11, 2020; Revised: March 13, 2020; Accepted: March 15, 2020 Corresponding author: Shin Hwang

Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea Tel: +82-2-3010-3930, Fax: +82-2-3010-6701, E-mail: shwang@amc.seoul.kr

Copyright Ⓒ 2020 by The Korean Association of Hepato-Biliary-Pancreatic Surgery

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/

licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Annals of Hepato-Biliary-Pancreatic Surgery ∙ pISSN: 2508-5778ㆍeISSN: 2508-5859

INTRODUCTION

Biliary papillomatosis is a rare disease of the biliary tract with over 200 reported cases in literature.1,2 This dis- ease entity is characterized by multiple papillary tumors of both intrahepatic and extrahepatic bile ducts, with clin- ical features such as abdominal pain, jaundice, and relaps- ing episodes of cholangitis, due to biliary tract occlusion by biliary stones, mucous plugs, tumor detritus, and blood clots.3 Recurrent superinfections of the biliary tract can lead to secondary biliary cirrhosis, which further leads to liver failure.4-7

Biliary papillomatosis has two unique features: the wide- spread pattern along the biliary tract, which is responsible for high rates of recurrence after resection; and the like-

lihood of malignant transformation.8 Accordingly, com- plete resection of the whole biliary tree is needed to cure this disease.

We herein present a case of a male patient with biliary papillomatosis with malignant change who underwent liv- ing donor liver transplantation (LDLT) and is still alive for 10 years despite lung metastasis.

CASE

A 49-year-old man was admitted with intrahepatic duc- tal mass suggesting intrahepatic cholangiocarcinoma. His liver function was normal without jaundice. Tests for hep- atitis B and C virus were negative. Dynamic computed tomography (CT) scan and magnetic resonance pancreato-

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Fig. 1. Pretransplant imaging study findings. Dynamic com- puted tomography scan images (A and B) and magnetic res- onance pancreatocholangiography (C) showed diffuse intraductal papillomatosis.

Fig. 2. Cholangiography findings.

A percutaneous transhepatic bil- iary drainage catheter was insert- ed (A) and percutaneous trans- hepatic cholangioscopy was per- formed (B).

cholangioscopy (PTCS) was performed for tissue biopsy (Fig. 2B). The lumens of the whole intrahepatic ducts were covered with villotubular adenomas with focal high-grade dysplasia (Fig. 3A). Some areas showed atypical villous proliferation, which was consistent with well-differentiated adenocarcinoma (Fig. 3B).

To treat biliary papillomatosis, photodynamic therapy had been performed, however, unsatisfactory outcomes were anticipated due to diffuse involvement of the whole intra- hepatic bile ducts (Fig. 4). Thus, LDLT using his son’s liver graft was planned.

At 10 days after photodynamic therapy, LDLT oper-

distal common bile duct resection margin was free from disease. The standardized surgical procedures were applied to LDLT operation using a modified right liver graft with a graft-recipient weight ratio of 1.2. Since the common bile duct was resected, Roux-en-Y hepaticojejunostomy was performed for biliary reconstruction. The patient re- covered uneventfully and was discharged 3 weeks after the LDLT operation (Fig. 5).

The pathology report of the explant liver specimens re- vealed the following: intraductal papillary neoplasms with an associated invasive carcinoma that invaded to the sub- epithelial connective tissue; no involvement of the liver

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Fig. 3. Cholangioscopic findings.

(A) The lumens of the whole intrahepatic ducts were covered with villotubular adenomas with focal high-grade dysplasia. (B) There were areas showing atypical villous proliferation, which was consistent with well-differentiated adenocarcinoma.

Fig. 4. Photodynamic therapy.

Transcatheter photodynamic ther- apy was performed (A) to the intrahepatic biliary papillomatosis areas (B-D).

parenchyma; positive lymphovascular invasion; no peri- neural invasion; and disease-free bile duct resection mar- gin (Fig. 6).

Although the distal bile duct resection margin was free of tumor, the risk of tumor recurrence at the remnant in- trahepatic bile duct still remained. Therefore, staged pylo- rus-preserving pancreatoduodenectomy was planned.

However, at 3 month posttransplant, the patient was re- admitted due to extensive retropancreatic abscess of un-

known cause (Fig. 7A). The retropancreatic abscess was barely resolved for 2 months despite percutaneous pigtail drainage (Fig. 7B). Since we did not identify the cause of retropancreatic abscess and acute appendicitis was sus- pected on follow-up CT scan, exploratory laparotomy was performed (Fig. 7C). We could not find any abnormality causing persistent abscess as the appendix remained nor- mal, thus multiple abdominal drains were inserted at the abscess site. Thereafter, the patient improved gradually

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Fig. 7. Serial follow-up with computed tomography (CT) scans for retropancreatic abscess. (A) Retropancreatic abscess was first detected at the 3-month CT scan. (B) The 5-month CT scan showed slightly improvement with pigtail drainage. (C) The 7-month CT scan showed persistence of retropancreatic abscess.

Fig. 6. Gross photographs of the explant liver. (A) No morpho- logical change of the external contour of the liver was observed.

(B) The intrahepatic ducts were lined with papillomatosis and the common bile duct was dis- colored by damage from prece- dent photodynamic therapy.

Fig. 5. Dynamic computed tomography scan taken 2 weeks after living donor liver transplantation. It was a typical post- transplant finding using a modified right liver graft.

complete at 1 year posttransplant without any evidence of disease recurrence (Fig. 8).

However, at 5 years posttransplant, a lung nodule was identified at the left upper lobe during routine follow-up chest CT scan, which was proven to be metastatic carcino- ma on CT-guided core biopsy (Fig. 9A). Pulmonary meta- stasectomy was performed, in which the nodule was a 1.5 cm-sized well differentiated adenocarcinoma, compatible to metastatic lesion. One year later, a local recurrence was detected at the left upper lobe (Fig. 9B), which was also resected and turned to be a 1.8 cm-sized metastatic adeno-

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Fig. 8. Dynamic computed tomo- graphy scan taken 1 year after living donor liver transplanta- tion. There was no abnormality at the liver graft (A) and retro- pancreatic abscess was completely resolved (B).

Fig. 9. Serial follow-up with computed tomography (CT) scans for lung metastasis. (A) A meta- static nodule was detected after 5 years (arrow). (B) Another meta- static nodule was detected after 6 years (arrow). (C) The other metastatic nodule was detected after 7 years (arrow). (D) Gross photograph showed the excised metastatic nodule shown at the 7-year CT scan.

carcinoma. The patient underwent adjuvant chemotherapy.

However, one year later, another lung nodule was de- tected at the left upper lobe (Fig. 9C), which was resected again. It was proven to be a 2.5 cm-sized metastatic ad- enocarcinoma (Fig. 9D). No further recurrence has devel- oped during the recent 3 years to date. Currently, this pa- tient is alive to date for 10 years after LDLT, despite re- peated episodes of pulmonary metastasis.

DISCUSSION

Biliary papillomatosis is a rare disease of the biliary tract characterized by the presence of multiple papillary tumors in the biliary tree. According to the World Health Organization, considering the similar characteristics of

biliary papillomatosis with its pancreatic counterpart, this entity has been renamed biliary intraepithelial papillary neoplasia.9

Lee et al.10 reviewed 58 cases of biliary papillomatosis and reported a malignant transformation rate of 83% in the setting of biliary adenomas. These results suggested that biliary papillomatosis should be considered as a pre- malignant condition with high malignant potential. The pathogenesis of progression from benign to malignant dis- ease may follow the adenoma-carcinoma sequences. Yeung et al.8 also reported a malignant transformation rate of 42% in 78 patients, and only 55% of the patients could undergo curative resection.

The unique spreading pattern of biliary papillomatosis and the high rates of malignant transformation accounts

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present case, some of the distal bile duct was involved and the extrapancreatic bile duct was resected during the LDLT operation. In addition, staged pancreatoduodenec- tomy was planned to remove the remnant intrapancreatic duct completely, however, it was not performed due to late development of retropancreatic abscess. To our know- ledge, the present case was the first case of LDLT for biliary papillomatosis.

There was a case report of deceased donor liver trans- plantation performed to a patient with biliary papil- lomatosis who survived for 10 years.11 In this patient, there was no sign of involvement of the distal part of the common bile duct, hence pancreatoduodenectomy was not performed. During follow-up, at 3 years posttransplant, CT scan showed enlargement of the pancreatic head due to suspected local recurrence. Although suspicious tumor recurrence developed, the patient did not undergo pan- creatoduodenectomy because the liver graft had recurrent fibrosis. During follow-up, the lesion of the pancreatic head had slightly grown, however, there was no definite evidence of recurrent disease for 10 years.11 In contrast, it was also reported that one patient underwent total pan- createctomy and liver transplantation sequentially without evidence of malignant transformation, but after 2 years biliary adenocarcinoma developed at the liver graft.12 Vibert et al.13 reported a series of three cases and con- cluded that in the absence of invasive carcinoma and pos- itive lymph nodes, LT can be successfully performed.

In the present case, the underlying cause of retro- pancreatic abscess was unknown. We only presumed that late development of retropancreatic abscess might be asso- ciated with tissue damage from the precedent photo- dynamic therapy. So far, photodynamic therapy has a lim- ited role in treating biliary papillomatosis and biliary cancers.14,15

Experience on our case and literature review suggest that patients with biliary papillomatosis with or without malignant transformation are selectively indicated for liver transplantation. Concurrent pancreatoduodenectomy may be also indicated if the distal bile duct is involved.

ORCID

Jin Uk Choi: https://orcid.org/0000-0001-8078-0593 Shin Hwang: https://orcid.org/0000-0002-9045-2531 Dong-Hwan Jung: https://orcid.org/0000-0001-5984-023X Gil-Chun Park: https://orcid.org/0000-0003-1631-3258 Chul-Soo Ahn: https://orcid.org/0000-0002-3844-3646 Ki-Hun Kim: https://orcid.org/0000-0002-4016-0995 Deok-Bog Moon: https://orcid.org/0000-0002-8209-3540 Tae-Yong Ha: https://orcid.org/0000-0001-9932-0212 Gi-Won Song: https://orcid.org/0000-0002-4235-0434 Sung-Gyu Lee: https://orcid.org/0000-0001-9161-3491

AUTHOR CONTRIBUTIONS

Conceptualization: SH. Data curation: JUC, DHJ, GCP, CSA, KHK, DBM, TYH, GWS, SGL. Visualization: SH, DHJ. Writing - original draft: SH, JUC. Writing - review

& editing: SH.

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